SANTEE  A San Diego police officer suffered major injuries after his patrol vehicle was struck by a pickup truck in Santee early Sunday morning by a suspected drunken driver.

The collision occurred around 2:30 a.m. on Mission Gorge Road at State Route 125, said Santee Sgt. David Hale.

After dropping off a prisoner at Las Colinas Detention Facility in Santee, the officer was headed back to the Northwestern Division to end his shift when the driver of a Toyota pickup crashed into the driver’s side of the officer’s vehicle, said watch commander assistant Dan Lasher.

The force of the impact knocked both vehicles off the road.

The officer was coherent when assistance arrived but officials said the damage to his vehicle was so extensive it took almost an hour to extricate him.

“They practically had to cut the whole roof off to get him out,” Hale said.

The officer, who has been on the force for about a year, suffered broken bones and internal injuries, officials said. He was taken to Sharp Memorial Hospital for surgery. His name and current condition were not released.

The male driver of the pickup did not suffer major injuries. He admitted to drinking alcohol before the crash, Hale said. He was booked into San Diego central jail for felony DUI charges. His name has not been released.